Norton 4 x 1 Round Combination Crystolon Stone ORMD Synthetic stones are man-made by

Synthetic stones are man-made by forming small bits of abrasive material into brick form using a resin or ceramic binder

the La Lune is similar in grit to the Pierka

The stone holder also has an integrated handle on the bottom

S meet in the centre and form a point

Norton 4 x 1 Round Combination Crystolon Stone ORMD Synthetic stones are man-made byThis is a 4" round combination Crystolon, or silicon carbide, stone with both coarse and fine sides. The coarse side is very aggressive and is used for bringing dull edges back to sharpness. The fine side is used to restore edges that are slightly dull, and for refining the edge left by the coarse side. This stone is similar to, but a bit more aggressive than the harder Norton 4 x 1 Round Combination India Stone. Norton Item Number: JB64 Norton Part